Talking-machine.



W. H. PUMPHREY.

TALKING MACHINE.

APPLICATION FILED JAN.9,1912.

Patented May 14, 1912 m w W W. H. PUMPHREY.

TALKING MACHINE.

APPLICATION FILED JAN. 1912.

Patented May 14, 1912.

3 SHEETS-SHEET 2v W. H. PUMPHREY.

TALKING MACHINE.

APPLICATION FILED JAN. 9, 1912v Patented May 14, 1912 3 SHEETSSHEBT 3.

TOR

g W/T/VE 8E8: M @4 11.

' Amel ica, residin c ounty of New minimum. I J 20, It is a further object of the invention to l ED STATES PATENT OFFICE.

WALTER .HYER PUmPHREY, or NEW YORK, N. Y.,' ASSIGNOB T0 nosron TALKING MACHINE comramr, A CORPORATION or mama i 'do'b o m it may concern rm rigad' citizen of the United States of l at New York, in the ork and State of New York, have invented certain new and useful Improvements -in Ta'lking i\ [achines, of \\'h1 ch-;-the.followin is a specification.

My inyention re ates to, talking machines loand has particular reference to a mounting for-the tone-arm thereof. In such machines t isord narily essential that the tone;arnr..have .freemovement n vertical and hori aintal-.planes. ancl the purpose of' ;,the' pres'e nt invention 18 toproduce anextre'melysimple and inexpensive form of mounting which will permit such movement 'of: the"tone armand reduce friction to a provide fol-readily removing the tone-arm or placing thmsa'me in position, without requiringthe aid of skilled workmen or tools, thus facilitating packing, shipping and ascscmhling the machine foruse. A further object is to avoid the neces-' sit for careful and accurate adjustment. of parts in mounting the arm and produce a cmistructlonin which confusion or mistake in assembling will. be rendered improbable notilnpossihle and the parts will be self adjusting. when brought into operative re-- lation w th-each other. i

'. These and other objects are attainedhy as inechanism illustrated in the accompanying drawings, which will -serve to carry my invention into effec I wish it understood,

however, that I do notlimit myself to either' the exact form or details shown, as various changes maybe made within the meaning -of the present invention. I I

In the drawings--Figure 1 is a view in elevation. partly in section, showing the invention applied to 'a talkihg machine of the 5 concea'led horn-type. Fig. a section on the line 8 -5 of Fig. 1. Fig. 3 is a similar viewon'the' lineS-S of Fig. 1, Fig. 4 a verticalsect-ional new illustrating a modi l TALKING-MACHINE.

there is a soundreproducerconsisting-got arm'and by reason of theresultingtangem counter-bored and 'tappedi as '13, 'ceive the'threaded ring. Thejeas-ting-lz i. interposed as a connection betweenthe'tone Patented May 14;

fi'cation. Fig. 5 is a horizontal Sectional, view of a further modification.

Referring now to thedrawings, 1 repr sents a portionof the cabinetfof a talking machine, 2 is the upwardlyprojecting-en of the motor shaft on wh1ch a turntable ,3 is mounted and serves as a supportgfor therecord disk 4. Cooperating wjthgthemecord l a.

sound h0x'5', a tone-arm 6, and-a horn, relatively arranged in .the usual.-rnallneli-v The tone-arm is mounted to have free-mayor 'ment in planes at right angles'to each lot her, In a -.machine such as ishei"shgwn,= qthe tone-arm swings and J is limited t0..- 0,Ye mentin vertical and horizontal planes. I At the rear or larger end, thMtone-arm js 6 5- giventheiapproximate form of a portion iofjfi a sphere, asindicated'aLS and loosely en? circling the shaped-end, there is a9; which is secured thereon by two screws The screws are arranged diametrically opa'lo.

posite each other, in a .line intersectin'gt center. of the spherical portion of the tonearm and serve as a turning axis about, which 'i the arm has free movement in vertical planes. As shown, the screws are threaded in the ring 9 andprovided with rounded or conical hearing points which enter 'correspondingly formed recesses in theshaped end of the tone-arm. V w

It will he observed that in assemblin'g the ring and arm, above described, the

straight surface of the'ring is cooperatively presented to the spherical surface of the tial relation of the parts, contact is rcduce'd 8 5" t'o 'a'mere theoretical linethus doingaway p with all friction. In order now'to provide for free horizontal movement of the was. :"111, the ring 5) is exteriorly threaded, as

l'ndicated at it and screwed into the open end of a fixed tubular casting 12, \vhi'ch is arm and horn and is securedQbyscreWsas" shown, in an opening in the wall or partb tionof the cabinet. Incutting the thread .11 and .13,-'provisi0n is made for allowing the ring 9 to turn readily in the casting 12 and as such turning movement of the ring is iotimparted to itby the tone-arm, free swing .L,o f the latter in horizontal planes isthus in- I 15 or two'turnsof the ring in the casting will serve ordinaril tov unite the members in operative relation and avoid unnecessary I friction. Again, topositively limit the en-. gagement of the threaded members, the ".2 ringmay' be reduced in diameter exterior-1y shown in' Fig, 4, vleaving only space enough to formitwof or three turns of the L thread cl:xnay .also cut out portions of the r-threadfro'm' both the ring and'the casting asin' Fi'gQ-15fand form ja joint resembling in a v aw refthat' universal joints of vaous -forms have been'employedin talking niaxihines'fto'." ive' the sound-box movement in "ei'tical and horizontal planes, also that ,tone-arms'fliavebeen mounted: on oppositely disposed fstuds, screws and balls to have such overnent-f-aboutthe' same but in all such constri ctions,; the removal of the tone-arm gorifthe placing of the same in position cannot readily accomplished and usually requiresithmd of skilled workmen,- and in 1 manyinstiamces,special tools, to say'nothing '40 of the frequent loss of arts and the difiiculty' andannoying del ay in duplicating In the present construction, rotal, -"ti on 'of the tone-arm'is all that is necessary 1 alto either entirely remove the arm orplace 41. itin operative position ready for immediate use, such rotation serving to cause the env en disengaged, it .will

7 beobserve that the ring'9 remains in posi- 60 tion .on the shaped-end of the tone-arm, be-

ing secured by the screws 10 so that'there i are no'detached parts to lose or to confuse and mystify the layman and in assembling 3 the machine or placing the tone-arm in position it is only necessary to screw one threaded member 5. e.-,- the ring 9, carried by the arm, into another i. e. the casting l2.

In providing a mounting at the inner end of the am, capable of giving two motions, I

" am enabled to construct the arm and horn of giaduall 'taperi ng length, which theoreti-.

cally at. $415 toimprove the reproduc- "on of soun and from a comme fgi aitpoint 'tone-arm' pivotal; "mounted within the heli} cal bearing andbeing" rreelyunovableio ntOrdiseggagement of the ring 9- li ien i of view adds the machine.

As a further advantage in employing a screw-ring 12 I would mention its low cost greatly to the appearance of i of manufacture, it being simply a shortipiece of a threaded tube, which latter on bemg cutinto suitable lengths produces these rings in any number desired and when drilled and tapped to receive the cone-screws,

will be apparent from the foregoing descrip- I helical bearing on which the arm has free movement in substantially horizontal lanes and a pivotal bearing within the he which the arm planes 2. In a talking machine,afixed member shaped to provide a helical bearing "and a said bearings.=

3. In a talking machine, a'iinountingior a" tone-arm comprising helical] and LpivOWI bearings arranged! one within th'e other, and a, tone-arm havingfrec movement on theibearings in planes angles to each other,

4. In a talking maehin'e, a f

ivotal bearings arranged one within the o erl i'll M 0 5. In a talkingmachlne, a mountinglfor a tone-arm comprising helical'and substantially the same a tone-arm comprising a helical bearing, a

substantially at right 1x on swings freely in vertical f pivotal bearing, and means supporting the pivotal bearing within the helical bearingQ 6. In a talking machine, a mounting for a tone-arm comprising a helical bearing, a. V

pivotal bearing within the helical bearing,

and supporting means for the pivotal ing movable on thehelical bearing.

7, In a talking machine, a mounting for a tone-arm comprising a member shaped to provide a 'helical'bearing, a tone-arm cen'-- tered relatively to the helical bearing, and an annular member movable on the bearing and having the tonearm pivoted therein.

a 8: In a talking machine, a mounting foia tone-arm comprising a member shaped to"; 1 provide a helical bearin a tone-arm'piv fl' oted in centered relation 1n the helical bearin'g, and an interposed snpport for'the tonearm movable on the bearing.

9. In a talking machine, a for a} '5 tone-arm comprising a helical; bearin an annular member located in the planeio and movable "on-gtl e {hearing and provided at it itlileshapedii projections, and a t0ne-arm movahiy snpthreaded internally, a ring svrewed into the 10 ported on the projections. member and n tone-arm pivotnlly nmnnted 10. 'In a talking machine, a mounting for in lhering with its exterior surface dispmed a tone-arm comprising a fixed threaded in tangentini rel'zxiiml to the surface of he 5 member, a ring engaging the threaded mom- 5 ring.

her and a t0ne-arm pivotally mounted in the VAL 335R HYER PWMPHRE Y ring. Witnesses:

11. In a talking machine, a mounting for Cu'rmamrr W. J nwnnn, a tone-arm comprising a fixed member 1 JAMES K. Conn, Jr, 

